Nonlinear Resistance Dependence on Length in Single-Wall Carbon Nanotubes

We report results of theoretical investigations of length dependence of electrical transport in single-wall carbon nanotubes. The structures investigated include straight nanotubes as well as nanotube multitapers of fixed and variable lengths. The nonlinear resistance as a function of the nanotube length obtained in our calculations supports the recent experimental findings and provides confirmation that this is an intrinsic feature of the nanotubes.